A major

A major

Relative key	F♯ minor
Parallel key	A minor
Dominant key	E major
Subdominant	D major
Component pitches
A, B, C♯, D, E, F♯, G♯, A

A major (or the key of A) is a major scale based on A, with the pitches A, B, C♯, D, E, F♯, and G♯. Its key signature has three sharps.

Its relative minor is F-sharp minor and its parallel minor is A minor. The key of A major is the only key where a Neapolitan sixth chord on ${\displaystyle {\hat {2}}}$ requires both a flat and a natural accidental.

In the treble, alto, and bass clefs, the G♯ in the key signature is placed higher than C♯. However, in the tenor clef, it would require a ledger line and so G♯ is placed lower than C♯.

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